You can better use paypal by online payments you know because the bitcoin is not very trustable when you try to do something on the internet you know and paypal is
many times secured than the paypal ever will be
If bitcoin be used for online payment, we must looking for trustable sellers because bitcoins is irreversible payment, it is mean we can not take back the bitcoins if there is problem with goods that be bought. So doesn't mean bitcoins is not very trustable but the sellers who are not trustable.